remove from meson build

Author: fchapoton

src/sage/groups/matrix_gps/meson.build

@@ -9,13 +9,11 @@ py.install_sources(
   'group_element.pxd',
   'group_element_gap.pxd',
   'heisenberg.py',
-  'homset.py',
   'isometries.py',
   'linear.py',
   'linear_gap.py',
   'matrix_group.py',
   'matrix_group_gap.py',
-  'morphism.py',
   'named_group.py',
   'named_group_gap.py',
   'orthogonal.py',